I've been at #1 with this team for most of the month, so here it is. It is a stall team, so don't use it if you don't want long drawn-out battles.
Mienshao @ Assault Vest
Ability: Regenerator
EVs: 252 HP / 4 Atk / 252 SpD
Sassy Nature
IVs: 0 Spe
- U-turn
- Knock Off
- Drain Punch
- Fake Out
Yeah, it's Mienshao, the best Regenerator in the game. It takes the attacks of many powerful sweepers like Avalugg and Rhyperior, and because most of these Pokemon are weak to Fighting and have terrible HP, it can 2-shot them easily even with a poor Attack stat.
Pheromosa @ Leftovers
Ability: Beast Boost
EVs: 252 HP / 252 Def / 4 SpD
Relaxed Nature
- Roost
- Rapid Spin
- U-turn
- Foul Play
Pheromosa is the bulkiest thing in the meta and a fantastic Spinner, which is her main role in this team.
Persian-Alola @ Leftovers
Ability: Fur Coat
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
IVs: 0 Atk
- Foul Play
- Rest
- Sleep Talk
- Parting Shot
This cat is just so physically bulky now that it has a boost in HP and Defense. To give you an idea, Snorlax has a chance of not 2HKOing it after a +6 Body Slam! STAB Foul Play 2HKOs most physical sweepers and it's a good counter to Espeon and other Psychics, many of which have become physical attackers.
Roserade @ Black Sludge
Ability: Natural Cure
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Spikes
- Rest
- Poison Jab
- Aromatherapy
Roserade takes care of Fairy types that can give Persian and Pheromosa trouble. It lays down Spikes and with Rest, Natural Cure, and Aromatherapy, it can keep itself and the team healthy.
Dragapult @ Leftovers
Ability: Infiltrator
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Will-O-Wisp
- Infestation
- Rest
- Hex
Dragapult is the team's spinblocker and is the bulkiest ghost in the game. While Spectrier can take physical hits better, it has low Sp. Defense and doesn't have the Fire and Electric resistance so it performs worse against spinners like Regieleki, Torkoal, and Coalossal. Will-o-wisp and Infestation deal chip damage every turn while it uses boosted Hexes to wear the opponent down.
Aerodactyl @ Heavy-Duty Boots
Ability: Pressure
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Roost
- Stealth Rock
- Toxic
- Rock Tomb
Aerodactyl is the counter to Defog users. Defog's PP gets worn down with Pressure while the opponent's HP gets worn down with Toxic. Its high HP and good Sp Defense lets it perform well against most common Defoggers. Even Zapdos can't 2HKO it with Thunderbolt. Rock Tomb could be replaced with Taunt to stop recovery and status moves, but I do want a way of damaging the opponent if they're immune to poison.
This team does have a noticeable weakness to Fairies, but it isn't really an issue in Flipped since most of them become physically oriented so they're handled easily by Roserade. Hustle Togekiss could be a threat, but so far I haven't encountered any.